Home / 281,211.40-388,071.66-153,886.96

Finding the Fourth Proportional to 281,211.40, 388,071.66 and 153,886.96

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Solution

The fourth proportional to 281,211.40, 388,071.66 and 153,886.96 is: 212,363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,211.40 : 388,071.66 = 153,886.96 : x
  2. Step 2: Convert to fraction form
    281,211.40/388,071.66 = 153,886.96/x
  3. Step 3: Cross multiply
    281,211.40x = 388,071.66 × 153,886.96
  4. Step 4: Simplify right side
    281,211.40x = 59,719,168,019.55
  5. Step 5: Solve for x
    x = 59,719,168,019.55/281,211.40
  6. Step 6: Final answer
    x = 212,363.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.